The Master Surname Database (not online) (mostly burials in Alberta cemeteries) of the Alberta Genealogical Society lists these names;

Mary URWIN, - 17 Mar 1973
William URWIN, - 15 Sep 1943
burial next to each other in the Mountain View cemetery, Lethbridge.

For further research please contact the Research Committee of the Lethbridge Branch of the AGS. And see also the newspaper obit index on their site.
http://abgensoc.ca/

Peter